LONDON (AP) — The Latest from the world championships (all times local):

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4:30 p.m.

Kevin Mayer of France extended his lead in the decathlon after the pole vault, clearing 5.10 meters in the eighth of 10 events at the world championships.

Mayer has 7,237 points, followed by Rico Freimuth of Germany with 7,121. Freimuth cleared 4.80 in the pole vault.

Another Germany, Kai Kazmirek, also jumped 5.10 and moved into third place with 7,021 points.

Only the javelin and the 1,500 meters remain in the competition.

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12:55 p.m.

Rico Freimuth closed in on decathlon leader Kevin Mayer by producing the longest throw in the discus at the world championships.

Mayer had a throw of 47.14 meters and leads with 6,296 points after seven events, but Freimuth set a mark of 51.17 to close within 24 points of the leader in the 10-event competition.

Oleksiy Kasyanov of Ukraine was in third position with 6,095 points.

After crashing in the hurdles and being disqualified from the event, two-time world champion Trey Hardee fouled three times in the discus and is totally out of contention.

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12:15 p.m.

The U.S. 4x400-meter relay team set the fastest time of the year to qualify for Sunday's final at the world championships, beating Trinidad and Tobago and Belgium.

Running several alternates on their team, the United States finished in 2 minutes, 59.23 seconds, .12 seconds ahead of Trinidad and Tobago.

In the opening heat, Spain beat Poland and Cuba for the three automatic qualifying spots but Jamaica was out, finishing fourth.

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11:10 a.m.

Usain Bolt and Justin Gatlin will meet in a final duel on the track after helping their teams qualify for the final of the 4x100-meter relay at the world championships.

The United States, with Gatlin running the second leg, won the first heat in a world leading time of 37.70 seconds. The Americans beat Britain and Japan, who also qualified.

Then came Bolt, and the Jamaicans needed him. Trailing when he got the baton on the anchor leg, Bolt powered away and quickly swept past his rivals and had time to look to his right before crossing in 37.95 seconds.

France and China also qualified.

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10:55 a.m.

Allyson Felix stayed in line to become the athlete with the most medals in world championships history when she helped the American 4x100-meter relay team qualify for the final later Saturday.

Running the second leg, Felix and her teammates crossed first in a season's leading time of 41.84 seconds, beating Britain and Switzerland. They also advanced to the final.

In the second heat, Germany beat two-time defending champion Jamaica to qualify along with Brazil.

The Netherlands, with 200-meter champion Dafne Schippers running the second leg, qualified on time.

Felix has won 14 medals at the world championships and can move up to 16 if she runs the 4x400 relay and the United States wins medals in both events.

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10:35 a.m.

Trey Hardee of the United States hit the third hurdle and clattered into the next one during the 110-meter hurdles to end his medal chances in the decathlon at the world championships.

The two-time world champion was later disqualified for deliberately knocking down a hurdle.

In the first of five events on the final day of the two-day competition, Kevin Mayer of France set a third personal record to easily stay atop the standings with 5,485 points. Rico Freimuth of Germany was in second place with 5,377 points, while Damian Warner of Canada had the fastest time in the hurdles of 13.63 seconds to move into third.

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10:20 a.m.

Saturday marks the end of the Usain Bolt's career.

The Jamaican great is looking for one more gold medal in the 4x100-meter relay at the world championships.

The relay heats are set for early Saturday. If everything goes according to plan and no batons are dropped, it will also mark the final duel between Bolt and American rival Justin Gatlin, who beat the Jamaican in the 100 final last weekend.

Also, British runner Mo Farah will compete in his last race on the track at a major championship when he goes for a fourth straight world title in the 5,000. He won a third 10,000-meter gold on the first day of the championships.

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